zd1211rw: make use of new regulatory_hint()

This cleans up zd1211rw's own regulatory work, and makes use of
the new cfg80211 regulatory_hint().

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/zd1211rw/Makefile

@@ -1,6 +1,6 @@
 obj-$(CONFIG_ZD1211RW) += zd1211rw.o
 
-zd1211rw-objs := zd_chip.o zd_ieee80211.o zd_mac.o \
+zd1211rw-objs := zd_chip.o zd_mac.o \
 		zd_rf_al2230.o zd_rf_rf2959.o \
 		zd_rf_al7230b.o zd_rf_uw2453.o \
 		zd_rf.o zd_usb.o

drivers/net/wireless/zd1211rw/zd_chip.c

@@ -28,7 +28,6 @@
 
 #include "zd_def.h"
 #include "zd_chip.h"
-#include "zd_ieee80211.h"
 #include "zd_mac.h"
 #include "zd_rf.h"
 

drivers/net/wireless/zd1211rw/zd_mac.c

@@ -3,7 +3,7 @@
  * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
  * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
  * Copyright (C) 2006-2007 Michael Wu <flamingice@sourmilk.net>
- * Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
+ * Copyright (C) 2007-2008 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -29,9 +29,23 @@
 #include "zd_def.h"
 #include "zd_chip.h"
 #include "zd_mac.h"
-#include "zd_ieee80211.h"
 #include "zd_rf.h"
 
+struct zd_reg_alpha2_map {
+	u32 reg;
+	char alpha2[2];
+};
+
+static struct zd_reg_alpha2_map reg_alpha2_map[] = {
+	{ ZD_REGDOMAIN_FCC, "US" },
+	{ ZD_REGDOMAIN_IC, "CA" },
+	{ ZD_REGDOMAIN_ETSI, "DE" }, /* Generic ETSI, use most restrictive */
+	{ ZD_REGDOMAIN_JAPAN, "JP" },
+	{ ZD_REGDOMAIN_JAPAN_ADD, "JP" },
+	{ ZD_REGDOMAIN_SPAIN, "ES" },
+	{ ZD_REGDOMAIN_FRANCE, "FR" },
+};
+
 /* This table contains the hardware specific values for the modulation rates. */
 static const struct ieee80211_rate zd_rates[] = {
 	{ .bitrate = 10,
@@ -95,6 +109,21 @@ static void housekeeping_init(struct zd_mac *mac);
 static void housekeeping_enable(struct zd_mac *mac);
 static void housekeeping_disable(struct zd_mac *mac);
 
+static int zd_reg2alpha2(u8 regdomain, char *alpha2)
+{
+	unsigned int i;
+	struct zd_reg_alpha2_map *reg_map;
+	for (i = 0; i < ARRAY_SIZE(reg_alpha2_map); i++) {
+		reg_map = &reg_alpha2_map[i];
+		if (regdomain == reg_map->reg) {
+			alpha2[0] = reg_map->alpha2[0];
+			alpha2[1] = reg_map->alpha2[1];
+			return 0;
+		}
+	}
+	return 1;
+}
+
 int zd_mac_preinit_hw(struct ieee80211_hw *hw)
 {
 	int r;
@@ -115,6 +144,7 @@ int zd_mac_init_hw(struct ieee80211_hw *hw)
 	int r;
 	struct zd_mac *mac = zd_hw_mac(hw);
 	struct zd_chip *chip = &mac->chip;
+	char alpha2[2];
 	u8 default_regdomain;
 
 	r = zd_chip_enable_int(chip);
@@ -139,7 +169,9 @@ int zd_mac_init_hw(struct ieee80211_hw *hw)
 	if (r)
 		goto disable_int;
 
-	zd_geo_init(hw, mac->regdomain);
+	r = zd_reg2alpha2(mac->regdomain, alpha2);
+	if (!r)
+		regulatory_hint(hw->wiphy, alpha2, NULL);
 
 	r = 0;
 disable_int:
@@ -753,7 +785,7 @@ static int zd_op_config_interface(struct ieee80211_hw *hw,
 	return 0;
 }
 
-void zd_process_intr(struct work_struct *work)
+static void zd_process_intr(struct work_struct *work)
 {
 	u16 int_status;
 	struct zd_mac *mac = container_of(work, struct zd_mac, process_intr);

drivers/net/wireless/zd1211rw/zd_mac.h

@@ -25,7 +25,6 @@
 #include <net/mac80211.h>
 
 #include "zd_chip.h"
-#include "zd_ieee80211.h"
 
 struct zd_ctrlset {
 	u8     modulation;
@@ -187,6 +186,70 @@ struct zd_mac {
 	unsigned int pass_ctrl:1;
 };
 
+#define ZD_REGDOMAIN_FCC	0x10
+#define ZD_REGDOMAIN_IC		0x20
+#define ZD_REGDOMAIN_ETSI	0x30
+#define ZD_REGDOMAIN_SPAIN	0x31
+#define ZD_REGDOMAIN_FRANCE	0x32
+#define ZD_REGDOMAIN_JAPAN_ADD	0x40
+#define ZD_REGDOMAIN_JAPAN	0x41
+
+enum {
+	MIN_CHANNEL24 = 1,
+	MAX_CHANNEL24 = 14,
+};
+
+#define ZD_PLCP_SERVICE_LENGTH_EXTENSION 0x80
+
+struct ofdm_plcp_header {
+	u8 prefix[3];
+	__le16 service;
+} __attribute__((packed));
+
+static inline u8 zd_ofdm_plcp_header_rate(const struct ofdm_plcp_header *header)
+{
+	return header->prefix[0] & 0xf;
+}
+
+/* The following defines give the encoding of the 4-bit rate field in the
+ * OFDM (802.11a/802.11g) PLCP header. Notify that these values are used to
+ * define the zd-rate values for OFDM.
+ *
+ * See the struct zd_ctrlset definition in zd_mac.h.
+ */
+#define ZD_OFDM_PLCP_RATE_6M	0xb
+#define ZD_OFDM_PLCP_RATE_9M	0xf
+#define ZD_OFDM_PLCP_RATE_12M	0xa
+#define ZD_OFDM_PLCP_RATE_18M	0xe
+#define ZD_OFDM_PLCP_RATE_24M	0x9
+#define ZD_OFDM_PLCP_RATE_36M	0xd
+#define ZD_OFDM_PLCP_RATE_48M	0x8
+#define ZD_OFDM_PLCP_RATE_54M	0xc
+
+struct cck_plcp_header {
+	u8 signal;
+	u8 service;
+	__le16 length;
+	__le16 crc16;
+} __attribute__((packed));
+
+static inline u8 zd_cck_plcp_header_signal(const struct cck_plcp_header *header)
+{
+	return header->signal;
+}
+
+/* These defines give the encodings of the signal field in the 802.11b PLCP
+ * header. The signal field gives the bit rate of the following packet. Even
+ * if technically wrong we use CCK here also for the 1 MBit/s and 2 MBit/s
+ * rate to stay consistent with Zydas and our use of the term.
+ *
+ * Notify that these values are *not* used in the zd-rates.
+ */
+#define ZD_CCK_PLCP_SIGNAL_1M	0x0a
+#define ZD_CCK_PLCP_SIGNAL_2M	0x14
+#define ZD_CCK_PLCP_SIGNAL_5M5	0x37
+#define ZD_CCK_PLCP_SIGNAL_11M	0x6e
+
 static inline struct zd_mac *zd_hw_mac(struct ieee80211_hw *hw)
 {
 	return hw->priv;

drivers/net/wireless/zd1211rw/zd_rf.c

@@ -23,7 +23,7 @@
 
 #include "zd_def.h"
 #include "zd_rf.h"
-#include "zd_ieee80211.h"
+#include "zd_mac.h"
 #include "zd_chip.h"
 
 static const char * const rfs[] = {